MSefi.com read only forum (Jan.15,2018)

Good news! after reading that someone else had this problem, I checked the bootloader pin, and it wasn't soldered at all. I soldered it in, and successfully loaded the firmware. This weekend I will get this back on the truck to see if it solved the IAC and FP issues!

I am starting to believe I have a firmware problem. I had major trouble getting the firmware loaded, and now, besides the stepper motor problem, the fuel pump never turns off. Without the motor running, the fuel pump just keeps running. Last night I tried to reload the firmware, but the jumper has n...

I quadruple checked it, and tried every order, and the order isnt the problem. I read somewhere that the stepper driver is protected for over-current by pwm when the current draw is too much. This is what it kinda sounds like its doing, even though the motor tests at 50 ohms. (the resistors on the c...

It depends. I had a EFI converted truck without one, and it worked fine as long as I kept the tank full. Even at that, every once in a while, even with half a tank, I starved the pump here and there, and I think it ruined the pump. I have a surge tank on it now, and no more problems. I have been mak...

I am having a problem getting the stepper motor to work correctly on my megasquirt 2 V2.2 board. The stepper motor appears to be a bi-polar jeep/dodge type with 4 pins. I bought a new one (so I have two) and they have the same problem, so I have eliminated the motor as a problem. I have checked the ...